﻿#region LicenseHeader

// Copyright 2012 The Trustees of Indiana University.  All rights reserved.
// 
// The Indiana University licenses this file to you under the Apache License, 
// Version 2.0 (the "License"); you may not use this file except in compliance 
// with the License.  You may obtain a copy of the License at 
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  
// See the License for the specific language governing permissions and 
// limitations under the License.
// 
// @author Thilina Gunarathne (tgunarat@indiana.edu)

#endregion

#region

using System;
using System.Collections.Generic;
using System.IO;
using AzureMRCore.DataModel;
using Microsoft.WindowsAzure;
using Microsoft.WindowsAzure.StorageClient;

#endregion

namespace AzureMRCore.Client
{
    public class TwisterAzureClientUtils
    {
        /// <summary>
        ///   Downloads the data in the MapTask meta data table for the given Job.
        /// </summary>
        /// <param name="storageAccount"> </param>
        /// <param name="jobID"> </param>
        /// <param name="outFileName"> </param>
        public static void DownloadMapTaskData(CloudStorageAccount storageAccount, string jobID, string outFileName)
        {
            var mapDataContext = new MapMetaDataContext(storageAccount.TableEndpoint.ToString(),
                                                        storageAccount.Credentials,
                                                        DataModelUtils.GetMapTableName(jobID));
            var file = new StreamWriter(outFileName);

            // for (int i = 0; i < 20; i++)
            // {
            IEnumerable<MapDataModel> startedMaps =
                mapDataContext.MapTasks.AsTableServiceQuery(); //.Where(p => (p.PartitionKey == i.ToString()));
            // int count  = Enumerable.Count(startedMaps);

            foreach (MapDataModel map in startedMaps)
            {
                Console.Out.WriteLine(map.RowKey + "," + map.Attempt1StartTime + "," + map.EndTime + "," +
                                      map.MapTaskTime + "," + map.ExecTime + " , " + map.CombinerTime + " , " +
                                      map.OutputTime);
                file.WriteLine(map.PartitionKey + "," + map.RowKey + "," + map.Attempt1StartTime + "," + map.EndTime +
                               "," +
                               map.MapTaskTime + "," + map.ExecTime + "," + map.CombinerTime + "," +
                               map.OutputTime);
            }
            //}
            file.Flush();
            file.Close();
        }

        public static Boolean CleanupBlobs(CloudStorageAccount storageAccount, string jobName)
        {
            CloudBlobClient client = storageAccount.CreateCloudBlobClient();
            IEnumerable<CloudBlobContainer> containers = client.ListContainers(jobName);
            foreach (CloudBlobContainer container in containers)
            {
                if (container.Name.Contains("out"))
                {
                    container.Delete();
                }
            }
            return true;
        }

        public static void RemoveTaskTables(string jobNamePrefix, CloudStorageAccount storageAccount)
        {
            CloudTableClient tableClient = storageAccount.CreateCloudTableClient();
            IEnumerable<string> tables = tableClient.ListTables("job" + jobNamePrefix);
            foreach (string table in tables)
            {
                   if (table.Contains("ReduceTask") && !(table.Contains("ReduceTasks")))
                    {
                Console.Out.WriteLine(table);
                tableClient.DeleteTableIfExist(table);
                   }
            }
        }
    }
}